Standard Specification for Pipe, Steel, Black and Hot ...

Abstract. This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8 to NPS 26. The steel categorized in this standard must be open-hearth, basic-oxygen or electric-furnace processed and must have the following chemical requirements carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium.